Sunday CBB Best Bets March 15: Can Purdue avenge their loss to Michigan?

Sunday features a light college basketball slate with a couple of mid-major teams and a few high-major schools taking the floor on the 15th day of March 2026. It’s conference championship Sunday, which means several teams will be officially punching their tickets to the Big Dance.

Will South Florida beat Wichita State by 6 points or more at Legacy Arena at BJCC in Birmingham, AL? Can #3 Michigan win and cover against #18 Purdue in the Big Ten Tournament championship game? Read on for our Sunday CBB Best Bets March 15 article.

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CBB Best Bet: Wichita State +5.5 over South Florida

I like the Shockers here. Wichita State is primed to cover the 5.5-point spread as neutral-site underdogs against South Florida on Sunday. The Shockers thrive in spots like these, boasting a 7-3 ATS record as an underdog and a 15-6 ATS mark following a win this year.

In conference games, Wichita State is 13-6 ATS in 2025-26. Additionally, they are 10-6 ATS when playing an opponent on equal rest this season. Riding momentum, Wichita State is 8-2 ATS in their last 10 games overall and historically matches up well with USF, going 5-2-1 ATS in their last 8 games against South Florida. I like the Shockers to keep this game competitive until the final buzzer.

Final score projection: SOUTH FLORIDA BULLS 76, WICHITA STATE SHOCKERS 74.

CBB Best Bet: Purdue +5.5 over Michigan

I’m taking the Boilermakers in this contest. Purdue is in a favorable spot to cover the 5.5-point spread as neutral-site underdogs against Michigan on Sunday afternoon. The Boilermakers have proven resilient in tough spots this season, holding a 2-1 ATS record as an underdog and a 2-1 ATS mark when playing on no rest in 2025-26.

They also elevate their game against quality competition, going 5-4 ATS when facing ranked opponents this year. Furthermore, Purdue has been highly reliable in tournament settings over the past few years, boasting a 21-15-1 ATS record in neutral-site games since the start of the 2022 season. I think the Boilers keep this one close and have a chance to win outright at the end.

Final score projection: MICHIGAN WOLVERINES 78, PURDUE BOILERMAKERS 75.